Stop motion for looms



Aug; 24 1926. 1,597,574 I A. W. BOUCHER STOP MOTION FOR Looms Filed April 7, 1926 9 4, O O o O Q f0 91 O n a o "o g :EROM WARPSTQPMOTIOM- E l. WITNESSES a, INVENTOR AK fLWBozwher W w 7 I 76 /M'MJ ATTORNEYS Patented Aug. 24, 1926.

ALI-HORSE W. BOUCHER, OF BURLINGTON, VERMONT.

STOP MOTION FOR LOOKS.

Application filed April 7, 1926. Serial No. 100,394.

7 This invention relates to stop motions for looms and has for an object to provide an improved construction wherein the breaking of the loom harness wires will cause the sto motion-structure to function.

nother objectof the inventionis to provide in a loom having a warp stop motion means for causing the stop motion to function when any of the operating members of the loom harness break.

A further object, more specifically, is to provide means for supporting spaced insulating contacts immediately below the H loom harness wires and connecting these contacts with the'sto motion of the loom so that when any of t e harness wires break a proper connection will be made for causin the stop motion to function.

In the accompanying drawing- Figure 1 is a fragmentary front view of part of a loom, disclosing an embodiment of the invention applied thereto, said em bodiment being shown in section.

Figure 2 is an elevation of an embodiment of the invention, the same being shown connected to part of a loom frame at one end.

Figure 3 is a top plan view of the structure shown in Figure 2, the loom frame being eliminated." y

Figure 4 is a fragmentary side elevation of part of the front of a loom, the same being shown more or. less in diagram and having a wirin diagram shown in connection therewith i ustrating how the stop motion structure is thrown into operation. I

Referrin to the accompanying drawing by numer s, 1 indicates the frame of a loom, said frame including a base beam 2. The frame 1 is, of course, associated with the harness 3 usual to looms and said harness includes the usual harness wires 4. In addition, the loom is adapted to be supplied with any desired kind of'stop motion which is thrown into and out of operation by the lever 5. This lever is also used for manual- 1y turning on and 01f the power so that when it is in the position shown in Figure 4, power is turned on but when it is swung to the right from that position, the power will be turned ofl". When lever 5 is in the position-shown in Figure 4, the loom is in condition to be operated and the usual stop motion of the loom is functioning. This stop motion is any usual or preferred warp stop motion arranged to stop the loom when any of the warp yarns break. As this stop motion and the particular construction of the loom form no part of the present invention, these matters have merely been briefly mentioned and partly shown. In the usual stop motion, however, the same is limited to the breaking of the warp threads but in the present -1nvention, means have been provided for causing the usual stop motion to function when any of the wires 4 break.

In Figures 2 and 3, the details of appli- I cants inventive idea have been presented which include the provision of a bar structure 6 which includes a supporting section 6, a contact section 7 and a supporting section 8 mounted on the beam 2. The section .6 may be mounted on some other part of the loom but in such a position that the section 7 will be beneath and spaced a short distance, from the wires 4. The section 7 is made from metal and is provided with teeth 9 in order to catch an of the wires 4 which may fall and hold t e same so that the wire will contact with the section 7 and also with the auxiliary contact plate 10 and thereby close the circuit. The plate 10 is" insulated from late 7 by suitable insulation 11, said insulation from plate 10 being 1lso notched or provided with teeth arranged in.

line with teeth 9.

As indicated in Figure 4, the plate 7 is grounded through wire 12 while plate 10 is connected through wire 13 to a magnet 14 and the outside of the ma net is connected through wire 15 to one si e of a source of current 16. The outside of the source of current 16 is connected through wire 17 to an insulated contact 18 which is in engagement with the extension 19 when lever 5 IS in the position shown in Figure 4. The extension 19 is provided with a slot at the lower end through which the pin 20 extends.

The pin 20 is mounted in the connecting,

member 19 which is pivotally'mounte'd at 21 so that when the loom is in operation,

one end will close the circuit of the warp I no i causing member 19" to move away from the contact 18 whereupon the circuit of that stop motion is opened. In case any of the wires 4 should break, they will immediately fall by gravity and engage contact plates 7 and 10 so that these plates will be e ectrically connectedr 'When this happens, current will flow from the source of current 16 through wire 15, the windings of magnet 14, wire 13, contacts 7 and 10 and the broken wire 4, wire 12 to the frame 1 and through the frame 1 to lever 5, through lever 5 to the contact spring 18 and from thence through the wire 17 to the stop motion mechanism of the loom and finally back to the source of current 16. The flowing of current in thiscircuit-will energize ma et 14 and attract the armature 30, said armature being pivotally mounted at 31 and carrying an arm or extension 32. The arm or extension 32 is pivotally. connected to the link 33, which link is pivotally connected to member 26 so that when armature 30 ,is pulled downwardly by the magnet, member 26 will be moved to the dotted position shown in Figure 4 and as the loom continues to function, the abutment 23 will strike member 26 and move the same over for causing the extension 29 of lever 28 to swing lever 5 to an inoperative position and thereby stop the loom.

What I claim is: 1. In a loom provided withrharness wires and a warp stop motion mechanism adapted to stop the loom when any of the warp yarn break, means for causing. said stop motion to function when any of the harness wires.

break,.said means including a pair of contact bars, an insulating bar arranged there. between, all of said bars being formed with teeth arranged immediately below the harness wires so that when any of the wires I break they will act as connectors for connecting said bars.

2. In a loom provided with harness wires and a warp stop motion mechanism for.

member between the lever and the lay so that the motion of the lay will be transmitted to the lever, and a circuit for said magnet, said circuit including a source of current and a pair of contact bars arranged beneath said harness wires, said contact bars being insulated from each otherwhere- *by when any of saidwires break they will form contact bars and close the circuit of said magnet.

3. In a loom provided with harness wires and a warp sto motion mechanism, a lever for causing said motion to function, means operated by the lay of the loom for causing said lever to function, and-a ma net for shifting said means to a position to operated by said lay and a circuit for said magnet, said circuit including a source of current and a pair of insulated spaced contact bars positioned near but beneath the harness Wires of the loom whereby when any of said harness wires break they will fall on the contact bars for closing the circuit of said magnet.

4. In a loom-provided with harness wires and means for turning on and off the power, a plurality of swinging members for moving said means for throwing off the power of the loom, a magnet for moving said swinging members into a'position to be actuated by the lay of the loom, and a circuit for said magnet, said circuit including a source of current and a pair of insulated contact plates arranged beneath said harness wires, said plates being so positioned that when any of the harness wires break they will fall on both.plates forclosing the circuit of said ma net.

. ALBHO SE W. BOUCHER. 

